Publications by authors named "I Altshuler"
Article Synopsis
- Permafrost plays a vital role in the Earth's climate system, acting as a major carbon reservoir and storing various chemicals.
- The thawing of permafrost due to climate change leads to serious issues, including damage to infrastructure, changes in water systems, and the release of potentially harmful chemicals, referred to as "dormant chemicals."
- The text calls for increased research on permafrost and the environmental impacts of thawing, to better understand how these transformations affect ecosystems amid rapid climate change.
Article Synopsis
- Canadian Arctic summer sea ice is declining significantly due to global warming, which is opening up the Northwest Passage as a new shipping route, increasing the risk of oil spills and environmental damage.
- Research focuses on evaluating bioremediation techniques for cleaning hydrocarbon contamination in Arctic beach sediments, involving 32- and 92-day experiments that analyzed the impacts of nutrient additions and a surface washing agent on microbial communities.
- Findings indicate that while nutrients show limited benefits for biodegradation, a surface washing agent emerges as a promising approach, highlighting the potential of unconventional microorganisms in effectively degrading hydrocarbons.
Unlabelled: is an abundant rumen bacterium that produces propionate in a cobalamin (vitamin B)-dependent manner via the succinate pathway. However, the extent to which this occurs across ruminal and closely related bacteria, and the effect of cobalamin supplementation on the expression of propionate pathway genes and enzymes has yet to be investigated. To assess this, we screened 14 strains and found that almost all strains produced propionate when supplemented with cobalamin.
View Article and Find Full Text PDFLichen-associated microbial members are prevalent in the snow microbiome of a sub-arctic alpine tundra.
FEMS Microbiol Ecol
November 2023
Snow is the largest component of the cryosphere, with its cover and distribution rapidly decreasing over the last decade due to climate warming. It is imperative to characterize the snow (nival) microbial communities to better understand the role of microorganisms inhabiting these rapidly changing environments. Here, we investigated the core nival microbiome, the cultivable microbial members, and the microbial functional diversity of the remote Uapishka mountain range, a massif of alpine sub-arctic tundra and boreal forest.
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